I think for the US to win the Cold War you would also have to prevent the military coups that led to the rise of autocratic governments in France and Italy in the 1970s, while Operation Northwoods, the Vietnam War, and the US meddling in it's own allies policies such as funding arms and weaponry to Yukio Mishima and his band of nutcases in Japan to carry out his failed coup destroyed all faith in the US governments, the way that France and Italy fell to Fascism destroyed all faith in capitalism as a whole.
But I don't see how this could be prevented unless the Spanish Republic was not victorious and/or the Soviet advance into Germany did not result in a full red Germany, but partition. Having a red Spain + red Germany really gave strong voice to the far-right in capitalist governments.
Alternatively, have some sort of social reform to co-opt and shut up the opposition in the US, the US relied solely on the WWII and the military industrial complex to create jobs, so maybe rather than a string of pro-corporate presidents maybe have a reformist or social democrat in for a change? But I feel that would only delay the inevitable(OOC: Since no one established it, Roosevelt never became president here, instead succumbing to polio in the 1920s, so he dies relatively unknown)
You soviets always think that you have the right form of socialism. However authoritarian socialism is not the kind of socialism that functions best. Nordic democratic socialism where the economy is divided between worker owned syndicates and government owned facilities ensures a dynamic and fair economy! The cold war in my opinion was more of a socialist victory rather than a soviet one.
So as the various socialist powers have after the Cold War without the political need to maintain united front of the far-left against capitalism having drifted to their own devices, I wonder if we will see a more volitile split between various forms of capitalism had the Soviets lost the Cold War. And it would be IMHO very messed up and dystopian, we would go back to the conditions on the eve of World War I, and with nuclear weaponry there is no telling what the capitalist and imperialist powers can destroy this time......